Why add hydroxypropyl methyl cellulose(HPMC) to mortar?
The production process of hydroxypropyl methylcellulose is mainly a polysaccharide-based ether product produced by alkalinisation and etherification of cotton fibres (domestic). It is not charged itself and does not react with the charged ions in the gelling material, making it stable. The price is also lower than other types of cellulose ethers, so it is